To calculate your gross pay, you simply multiply your hourly wage by the number of hours you worked in a week. In this case, if you earn $10 per hour and work 40 hours, the calculation would be:
Gross Pay = Hourly Wage x Hours Worked
Gross Pay = $10 x 40 = $400
Therefore, your gross pay for that week would be $400. This is the total amount before any deductions such as taxes or other withholdings are taken out.